Setting up theodolite pdf

The lower clamp is kept fixed and upper clamp is loosened. File type pdf wild t theodolite manual engineering level a brief how to video on setting up a level and rod. Doc introduction to theodolite farhan qasim academia. With the upper clamp closed, and the compass released unscrew its. The setting of the theodolite over a station at the time of taking any observation is called temporary adjustment. Study the contract plans, special provisions, standard plans, standard specifications, the plan quantities, construction manual, and. Digital theodolite the important features of total station are.

It is a basic course for all universities for civil engineers. Working of vernier theodolite to measure horizontal and. The regular movie mode is similar to the photo mode in theodolite, recording a basic video with options to show an overlay with crosshairs, geodata, and a custom note. Theodolite surveying theodolite the theodolite is a most accurate surveying instrument mainly used for. Set up the tripod where you have a clear sight of the benchmark, at a similar height to but preferably higher, than the benchmark. Make sure the height of the tripod allows the instrument the theodolite to be eyelevel. This video will give you a very basic idea of the process, but there.

Set up the tripod so that the tripod plate is as horizontal as possible and the legs of the tripod are firm in the ground. Following are the adjustment required for theodolite before using it. For historical reasons, the side of the theodolite where the horizontal and vertical adjusters are positioned is known as the face of. Wild t2 mod user manualdescribsion beschreibung wild heerbrugg ag wild t2 mod theodolite user manual. How to establish a levelgrade line for landscaping this old house duration. You will be using a universal theodolite, model wild t2, for these measurements. Topcon dt200 series instruction manual pdf download. Set up the theodolite over the peg o and level it accurately. Wild t2 universal theodolite, the bestknown singlesecond instrument in the world. Adjustment of a theodolite the adjustments of a theodolite are of two kinds permanent adjustment. The heights of some inaccessible objects such as towers can. Chapter 15 construction survey procedures 1501 general in performing construction surveying, preparation is a major part of the operation. A theodolite is basically a telescope with both a vertical and horizontal axis.

Displays the values of distance, angle, height and the coordinates of the observed point, where the reflector target is kept. Ltd is basis of the etdt series electronic theodolite by adding laser system to the telescope. A theodolite needs two people to measure and align the angles. A plumbbob or optical device is used to position the theodolite directly above the station pin. Mark the point at which the theodolite will be set up with a surveyors nail or a stake. Surveying instruments operators manual dt240 dt540 dt740 dt940 dt540l dt740l dt940l digital theodolite class 2 laser product. Level the theodolite by adjusting the tripod legs and using the bullseye level. View and download topcon dt200 series instruction manual online. Surveying is a very important part of civil engineering. Center the bubble using the leveling screws the bubble moves toward the screw that is turned clockwise. O is the station point fixed on the ground by a peg. Adjustment of the theodolite temporary adjustment setting up the theodolite 16.

Measure the height between the ground and the instrument. Theodolites how does a theodolite work theodolite vs. Setting out grades ranging curves tacheometric survey 4. Working of a vernier theodolite starts with setting up and adjustment of theodolite for the measurement of angles. Able to connect with electronic controller able to connect with most of the electronic controllers on the market to complete field data collection. Rotate the instrument 90 degrees and level using the 3rd leveling screw. Adjustment of a theodolite, surveying and levelling. If the tripod is not set properly, a great deal of time will have to spent on subsequent operations 2 to 4. Procedure of theodolite methods in setting out of stage.

Measurement of horizontal angle measurement of angle abc the instrument is set over b. Centre the telescope bubble with the tilting screw for each staff reading. In 1571, leonard digges came up with a device which more closely resembled an early theodolite and called it theodolitus. An ets is an electronic instrument used in modern surveying. Control all the functions are controlled by operating key board. The total station is an electronic theodolite integrated with an electronic distance meter edm to read distances from the instrument to a particular spatial entity. The tripod legs are spread out and rested lightly on the. It is the axis of rotation of the telescope in the vertical plane. We hope students all over the world will find it helpful. The art of setting up a theodolite over a station theodolite there should be the following controls silver knobs. Field book example please remember that you can use additional pages to clearly show all necessary information trial 20m 40m 60m 1 30 58 90 2 30 57 89 3 31 57 90 avg. Loosen the horizontal clamp and turn instrument until plate level is parallel to 2 of the leveling foot screws.

When the desired relationship between fundamental lines is disturbed. Theodolite survey application in height and distance measurements. The art of setting up a theodolite over a station measurements and errors 3. Now, and only now, place the instrument on the tripod and secure it with the central fixing screw. The permanent adjustment are made to establish the fixed relationships between the fundamental lines of the instrument, and once made, they last for long time.

Write up the lab in your field book, refer to the following example. Permanent adjustment of transit theodolite, methods of repetitions and reiterations. Total station setup and operation university of south. Extend the legs of the tripod as far as is required and tighten the screws firmly. Some models include internal electronic data storage to record surveyed points xnorthing. Here in we have gathered some pdf lectures on surveying. The circuiar holder with the horizontal circle is located outside on the axis sleeve. Setting up a total station and basics of operation duration. Edm and electronic theodolite edm and electronic theodolite 33. It was a divided circle and square with a compass in the center, according to brief history of turning angles at noaa. Wild heerbrugg t2 mod user manual pdf file in english. In order to make accurate and precise measurements using a total station or theodolite, the instrument must be set up properly. The angle of each axis can be measured with fairly accurate precision as long as the operator knows how to use the theodolite and knows basic trigonometry. Mount the theodolite by placing it atop the tripod, and screw it in place with the mounting knob.